The regional director also found that Boeing broke labor law when it withheld information from SPEEA that was pertinent to negotiations.

"All through negotiations, Boeing said it needed to lower costs or it would move work elsewhere," said Ray Goforth, executive director of SPEEA. But Boeing refused to provide details about the cost of doing business elsewhere.

"Bargaining is over, but it would be helpful to have that information," said Goforth.

A Boeing spokesman emphasized that union members already have accepted the company's contract.

"Boeing disagrees that any employees were disciplined inappropriately or that any information was unlawfully withheld and maintains that its actions were consistent with all applicable labor laws," Doug Alder, a Boeing spokesman, wrote in an emailed statement.

The NLRB previously dismissed a couple of SPEEA's other complaints against Boeing, but SPEEA is appealing those, Goforth said. The labor board also is still reviewing a claim involving alleged illegal surveillance of union members.

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